Bug is present in 4.2.3 also. building 32bit code with architecture greater than sparcv8 fails like this:
/home/users/builder/rpm/BUILD/gcc-4.3.0/builddir/./gcc/xgcc -B/home/users/builder/rpm/BUILD/gcc-4.3.0/builddir/./gcc/ -B/usr/sparc-pld-linux/bin/ -B/usr/sparc-pld-linux/lib/ -isystem /usr/sparc-pld-linux/ include -isystem /usr/sparc-pld-linux/sys-include -c -O2 -m32 -mcpu=ultrasparc -gdwarf-2 -g2 -fPIC -W -Wall -gnatpg s-finroo.adb -o s-finroo.o /home/users/builder/rpm/BUILD/gcc-4.3.0/builddir/./gcc/xgcc -B/home/users/builder/rpm/BUILD/gcc-4.3.0/builddir/./gcc/ -B/usr/sparc-pld-linux/bin/ -B/usr/sparc-pld-linux/lib/ -isystem /usr/sparc-pld-linux/include -isystem /usr/sparc-pld-linux/sys-include -c -O2 -m32 -mcpu=ultrasparc -gdwarf-2 -g2 -fPIC -W -Wall -gnatpg s-fore.adb -o s-fore.o s-fore.adb: In function 'System.Fore.Fore': s-fore.adb:57: error: unrecognizable insn: (insn 11 10 12 2 s-fore.adb:41 (set (reg:CCFPE 96 %fcc0) (compare:CCFPE (reg/v:TF 108 [ t ]) (reg:TF 115))) -1 (nil)) +===========================GNAT BUG DETECTED==============================+ | 4.3.0 20080408 (release) (sparc-pld-linux-gnu) GCC error: | | in extract_insn, at recog.c:1990 | | Error detected around s-fore.adb:57 | | Please submit a bug report; see http://gcc.gnu.org/bugs.html. | | Use a subject line meaningful to you and us to track the bug. | | Include the entire contents of this bug box in the report. | | Include the exact gcc or gnatmake command that you entered. | | Also include sources listed below in gnatchop format | | (concatenated together with no headers between files). | +==========================================================================+ Please include these source files with error report Note that list may not be accurate in some cases, so please double check that the problem can still be reproduced with the set of files listed. raised TYPES.UNRECOVERABLE_ERROR : comperr.adb:398 make[7]: *** [s-fore.o] Error 1 make[7]: Leaving directory `/home/users/builder/rpm/BUILD/gcc-4.3.0/builddir/gcc/ada/rts' make[6]: *** [gnatlib] Error 2 -- Summary: build fails when building with -m32 -mcpu=ultrasparc (sparcv9 or -mv8plus also) Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: ada AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tommat at pimpek dot one dot pl GCC build triplet: sparc-pld-linux GCC host triplet: sparc-pld-linux GCC target triplet: sparc-pld-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35906